[2] To make her a suitable bride for a prince, the emperor had raised her father (whose ancestors had been created counts in the Hungarian nobility in July 1685 and barons in February 1616) to Prince Koháry of Csábrág and Szitnya in Austria's nobility on 15 November 1815, two weeks before the wedding, thereby allowing her to come to her bridesgroom already a princess.

[1] In 1826 at the death of her father Maria Antonia inherited over 150000 hectares of land in present-day Lower Austria, Hungary and Slovakia, including estates, forests, mines and factories.

According to a list of assets appended to the marriage contract of her son, Prince August, at the time of his marriage to Princess Clémentine of Orléans in 1843, the Koháry properties included the enormous Palais Koháry in the center of Vienna and several Viennese manors, a summer home and lands at Ebenthal, Lower Austria, estates in Austria at Velm, Durnkrut, Walterskirchen, Bohmischdrut and Althoflein, as well as a dozen manors in Hungary, the domaine of Kiralytia, and a mansion at Pest.

[2] Until the first world war, her descendants, the Koháry branch of the House of Saxe-Coburg and Gotha, were among the three largest landowners in Hungary.

[3] She and her husband became the parents of four children:[2] The couple were also ancestors of Pedro V of Portugal, Luis I of Portugal, Charles I of Austria, Otto von Habsburg, Michael I of Romania, Peter II of Yugoslavia, Ferdinand I of Bulgaria, Boris III of Bulgaria, Simeon II of Bulgaria, Henri, Count of Paris, Prince Boris of Leiningen and Prince Hermann Friedrich of Leiningen，Pedro de Alcântara, Prince of Grão-Pará, and members of the Imperial House of Brazil alive today.